CN102520675A - Gas-steam combined cycle and solar power generation combined heating system and scheduling method thereof - Google Patents
Gas-steam combined cycle and solar power generation combined heating system and scheduling method thereof Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/26—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension
- F02C3/28—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension using a separate gas producer for gasifying the fuel before combustion
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- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1048—Counting of energy consumption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F24D18/00—Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2101/00—Electric generators of small-scale CHP systems
- F24D2101/40—Photovoltaic [PV] modules
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2103/00—Thermal aspects of small-scale CHP systems
- F24D2103/10—Small-scale CHP systems characterised by their heat recovery units
- F24D2103/13—Small-scale CHP systems characterised by their heat recovery units characterised by their heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a gas-steam combined cycle and solar power generation combined heating system and a scheduling method thereof. A hot water radiator and the power consumption of a heat pump are adopted to supply heat to a user, wherein hot water comes from a gas-steam combined cycle unit, electric power is supplied jointly by the gas-steam combined cycle unit and a solar power generation unit, and after a comprehensive scheduling controller detects energy supply and the energy consumption of the user for a period of time, a forecast is made for a period of time in the future; scheduling is then carried out on the basis, the flow of the hot water outputting heat is reduced under the condition of guaranteeing electric power supply and heat energy supply, electric power is consumed to supply heat for compensation, and power consumption for heating not only can compensate for the insufficient heat supplied by the hot water, but also can increase the load in the valley period of electric power; consequently, solar power generation and combined heat and power generation are integrated, the output of combined heat and power generation and the change of the power-consuming load of the user are regulated according to solar power generation fluctuation, and thereby equivalent smooth solar power generation output at the user side is realized within equal detection cycle and regulation cycle.
Description
Technical Field
The invention belongs to the technical field of comprehensive utilization of clean energy, and relates to a gas combined cycle and solar power generation combined heating system and a scheduling method thereof.
Background
Renewable energy has the characteristics of green and clean, and the development is rapid in recent years. However, taking solar power generation as an example, while providing clean low-carbon energy, large-scale grid connection of a solar power plant also brings adverse effects to safe and economic operation of a power grid. After a large-scale solar power plant is connected to a grid, the output fluctuation is large, and the power fluctuation is usually opposite to the fluctuation trend of the power load. The anti-peak regulation characteristic of solar power generation can further enlarge the peak-valley difference of the system, increase the difficulty of power grid dispatching, and generate a series of influences on power grid dispatching operation, voltage control, power grid peak regulation and the like. The energy abandon phenomenon is serious because the related research is not perfect.
Disclosure of Invention
The invention aims to provide a gas combined cycle and solar power generation combined heating system and a scheduling method thereof, which realize smooth output of solar power generation and improve effective utilization of solar power generation by comprehensively regulating and controlling heat energy and electric energy.
The invention is realized by the following technical scheme:
a gas combined cycle and solar power generation combined heating system comprises:
the gas heating boiler and the gas combined cycle unit are used for generating electric power and heating hot water;
a solar power generator set for generating electric power;
the heat pump consumes electric power to provide hot water and hot water supply type heating radiators through the heat pump of a user connected with the gas heating boiler, the gas combined cycle unit and the solar generating set in parallel through a power cable network; a heat pump remote switch for controlling the heat pump;
the ammeter collects the non-heating power consumption of the user;
a hot water type heating radiator of a user connected with the gas combined cycle unit through a heat supply pipeline network; the hot water consumption meter is used for detecting the amount of hot water input into the hot water type heating radiator by the gas combined cycle unit; a hot water type heating radiator remote control switch for controlling the hot water type heating radiator;
the first remote integrated controller is used for acquiring the capacity information of the gas combined cycle unit, including the flow rate of heating output hot water and the electric quantity of power generation output, and transmitting the acquired capacity information to the comprehensive dispatching control device; the first remote centralized controller also receives a scheduling control signal sent by the comprehensive scheduling control device and controls the gas combined cycle unit to control the action of the execution device according to the scheduling control signal;
the second remote centralized controller is used for acquiring the capacity information of the generated output power of the solar generating set and transmitting the acquired capacity information to the comprehensive dispatching control device;
the third remote integrated controller records pipeline distance information between a hot water type heating radiator of a user and the gas combined cycle unit, acquires energy consumption information including non-heating power consumption of the user and hot water inflow and non-heating power consumption detected by a hot water consumption meter, and also acquires thermal inertia time input by the user; transmitting the pipeline distance information, the acquired energy consumption information and the thermal inertia time of the user to a comprehensive scheduling control device;
the third remote centralized controller also receives a dispatching control signal sent by the comprehensive dispatching control device and drives a heat pump remote control switch and/or a heating radiator remote control switch to execute actions according to the dispatching control signal;
and the comprehensive scheduling control device generates a regulation control signal according to the received productivity information, the pipeline distance information of the user and the energy consumption information, and sends the regulation control signal to the first remote centralized controller and/or the third remote centralized controller.
The comprehensive scheduling control device reduces the heating output hot water flow of the gas combined cycle unit under the condition of ensuring to meet the power supply and heat energy supply according to the received capacity information of the gas combined cycle unit and the solar generator set and the energy consumption information of the user, and the heat supply deficiency required by the user caused by the reduction of the hot water flow is compensated by the heat pump power consumption heat supply;
the comprehensive dispatching control device sends out a regulating control signal which comprises the heating output hot water flow and the power generation output electric quantity of the gas combined cycle unit at the dispatching time, the hot water quantity of a hot water type heating radiator which is provided by the gas combined cycle unit and flows into a user and the heating power consumption of the heat pump.
When the heat pump consumes electric power for heat supply compensation, the time for hot water provided by the gas combined cycle unit to flow to a user and the thermal inertia time are also considered.
The integrated scheduling control apparatus includes:
the first data receiving unit is used for receiving the capacity information of the gas combined cycle unit and the solar generating set, the energy consumption information of a user and the pipeline distance information of the user;
a data decoder unit for decoding all received data;
a data memory unit for storing all decoded data;
a scheduling control signal calculation unit generating a scheduling control signal;
a signal encoder for encoding the scheduling control signal; and
and transmitting the coded scheduling control signal to the sending units of the first remote centralized controller and the third remote centralized controller.
The comprehensive scheduling control device is connected with the cloud computing service system through the power optical fiber and drives the cloud computing service system to calculate so as to obtain a scheduling control signal; the comprehensive dispatching control device receives dispatching control signals obtained by the cloud computing service system through the power optical fiber, and then transmits the dispatching control signals to the first remote centralized controller and/or the third remote centralized controller through a power cable or a wireless transmission mode.
The hot water type heating radiator remote control switch is coupled with the comprehensive dispatching control device in a remote control mode through a third remote centralized controller; the heat pump remote control switch is coupled with the comprehensive dispatching control device in a remote control mode through a third remote centralized controller; the heat pump is also provided with a heat pump special electric energy meter for detecting the heating power consumption of the heat pump, and the power consumption is collected by the third remote centralized controller;
the gas combined cycle unit control execution device is coupled with the comprehensive scheduling control device in a remote control mode through a first remote integrated controller; and the gas combined cycle unit control execution device executes actions according to the scheduling control signal.
The third remote centralized controller comprises a non-heating electric meter pulse counter, a heating hot water flow pulse counter, a pulse signal code converter, a metering signal amplifying emitter, a control signal receiving decoder and a remote control signal generator which are connected with each other;
the non-heating electric meter pulse counter is connected with a user non-heating electric meter and used for detecting user non-heating power consumption data, and the user non-heating power consumption data is transmitted to the comprehensive scheduling control device after being processed by the pulse signal code converter and the metering signal amplifying emitter;
the heating hot water flow pulse counter is connected with a hot water consumption meter of a hot water type heating radiator and is used for detecting the inflow of hot water, the inflow of the hot water is processed by a pulse signal code converter and a metering signal amplifying emitter to generate a signal, and the signal and user pipeline information are transmitted to the comprehensive scheduling control device;
and the control signal receiving decoder is used for receiving and decoding the scheduling control information sent by the comprehensive scheduling control device, and then sending the control signal to the heat pump remote control switch and the hot water type heating radiator running water valve remote control switch through the control signal remote control transmitter to execute actions.
The scheduling method of the gas combined cycle and solar power generation combined heating system comprises the following steps:
in the time period of 0-T multiplied by delta T, delta T is a sampling period, T is the number of times of collection, the comprehensive scheduling control device predicts the productivity information of T-2T multiplied by delta T in a future period of time according to the received productivity information of the gas heating boiler, the gas combined cycle unit and the solar generator set, and combines the energy consumption information of users in the time period of 0-T multiplied by delta T, under the condition that power supply and heat supply are ensured to be met, the heating output hot water flow of the gas heating boiler and the gas combined cycle unit is reduced, the insufficient heat supply required by the users due to the reduction of the hot water flow is compensated by the heat pump consumed power heat supply, and the time and the thermal inertia time of the hot water provided by the gas heating boiler unit flowing to the users are considered, and the supplement amount is calculated;
and then in a time period of T-2T multiplied by delta T, the comprehensive scheduling control device generates and sends a scheduling control signal according to prediction and scheduling calculation of power supply and heat energy supply by taking delta T as a regulation and control period, the first remote centralized controller receives the scheduling control signal and then controls the generated output electric quantity and the heating output hot water flow of the gas heating boiler and the gas combined cycle unit, and the third remote centralized controller receives the scheduling control signal and then controls the heat pump to consume power and supply heat to compensate insufficient heat supply caused by reduction of hot water of the hot water type heating radiator.
The generation of the scheduling control signal of the comprehensive scheduling control device comprises the following steps:
1) collecting variables:
1.1) collecting the combined cycle power P of the gas heating boiler and the gas combined cycle unit in the time period of 0-T multiplied by delta TCOMB(t) thermal output of the Combined cycle HCOMB(t) and the thermal output H of the gas heating boilerBOIL(t), and sending to the integrated scheduling control device; delta T is a sampling period, T is the acquisition frequency, and T is a natural number;
collecting the generated output of a No. 0-M solar generator in a time period of 0-T multiplied by delta T
And sending to the comprehensive dispatching control device;
1.2) collecting the following information of 0-N users within a time period of 0-T multiplied by delta T: pipeline distance S between user and heat source gas heating boiler and gas combined cycle unitiAnd the power consumption is Pi(t) heat consumption H provided by gas heating boiler and gas combined cycle unit for hot water type heating radiatori(t) installed capacity of Heat Pump
And a user-entered thermal inertia time TiAnd sending the data to the comprehensive dispatching control device;
2) the following variables were calculated:
2.1) calculating solar energyTotal output of motor in 0-T multiplied by delta T time period
Then according to the total output
Predicting total output P of the solar generator in the time period of T-2T multiplied by delta T by utilizing a statistical analysis methodsum(t)；
Collecting the thermal output H of the combined cycle of the gas heating boiler and the gas combined cycle unit in the time period of 0-T multiplied by delta TCOMB(t) thermal output H of gas heating boilerBOIL(t) and Combined cycle Power PCOMB(T) predicting the thermal output H of the combined cycle for a time period of T to 2T x Delta TCOMB(t) thermal output H of gas heating boilerBOIL(t) and Combined cycle Power PCOMB(t)；
2.2) calculating the equivalent distance from each user to the gas-fired heating boiler
v is the flow rate of the hot water in the pipe; and rounding the calculation result
Will be the same as siIs divided into the same group, which is the l group, siL; total L groups, wherein L is a natural number;
grouping each user, respectively calculating the total heating load H of all users in each groupload(l) And heat pump capacity PEHP(l)；
Hload(l)＝∑Hi(t，l)，Hi(t, l) is the heating load of the first group of users i at the moment t;
3) will be P mentioned aboveComB(t)、HCOMB(t)、HBoil(t)、Pload(t)、Hload(l) And PEHP(l) Substituting, forming an optimization problem by an objective function (1) and constraint conditions (2-10) to carry out iterative solution, taking the minimum value of the objective function as a result, and obtaining each variable as a regulation signal:
3.1) the objective function is:
wherein p ispv(t) is adjusted equivalent solar energyThe total output of the power generation is obtained,
the expression of the average equivalent solar power generation output value is as follows:
ppv(t)＝Ppv(t)+(pComB(t)-PComB(t))-pEHPs(t) (2)
wherein p isComB(t) the regulated power output of the combined cycle unit, PCOMB(t) is the predicted combined cycle power output pEHPs(t) all users consume power when t is the power consumption of the heat pump;
3.2) constraint conditions
3.2.1) Heat load balance equation
The power of the insufficient heating at the supply side is delta h (t) by reducing the hot water output, and the expression is as follows:
Δh(t)＝HCOMB(t)-hCOMB(t)+HBoil(t)-hBoil(t)； (4)
wherein HCOMB(t) predicted thermal output of the combined cycle, HBOIL(t) predicted thermal output of the gas heating boiler, hCOMB(t) thermal output of the combined cycle after regulation, hBoil(t) the thermal output of the gas heating boiler;
considering the time of hot water flowing into the user in the pipeline and the thermal inertia time, the compensation Δ h (t) required by the user to use the heat pump is expressed as:
hEHP(t + l, l) is the sum of the heating power of the first group of user heat pumps at the moment of t + l;
3.2.2) constraint of the gas heating boiler and the gas combined cycle unit:
hCOMB(t)＝fCOMB(t)·ηq ComB； (6)
wherein,
the thermal efficiency of the combined cycle is improved;
for combined cycle power generation efficiency; h isCOMB(t) thermal output of the post-conditioning combined cycle, PComB(t) the electrical output of the combined cycle after regulation, fCOMB(t) power consumption of the combined cycle after conditioning;
3.2.3) customer side Heat Pump constraints
Thermoelectric ratio constraint: h isEHP(t，l)＝COPEHP·pEHP(t，l) (8)
hEHP(t, l) is the sum of the heating power of the first group user heat pump at the time t, COPEHPIs the heat pump coefficient of performance;
the upper limit of the output: p is more than or equal to 0EHP(t，l)≤min(PEHP(l)，Hload(l)/COPEHP)； (9)
The sum of the heat pump power consumption of all user groups in each time period is as follows:
4) the comprehensive scheduling control device generates scheduling control signals according to the adjusted variables in the operation results and sends out:
the thermal output h of the combined cycle of the gas heating boiler and the gas combined cycle unitCOMB(t) combined cycle electrical output PComB(t) and the thermal output h of the gas heating boilerBoil(t) sending to the first remote centralized controller, and controlling the actions of the first remote centralized controller in each time period in the future adjustment time;
the power consumption p of the user heat pumpEHP(t, l) and heat supply hEHP(t, l) is sent to a third remote centralized controller to control the action of the third remote centralized controller in each time period in the future adjustment time.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the gas combined cycle and solar power generation combined heating system and the scheduling method thereof, a user supplies heat by adopting two modes of a hot water radiator and heat pump power consumption, wherein hot water is sourced from a gas combined cycle unit, electric power is supplied by the gas combined cycle unit and a solar power generation unit in a combined mode, and after energy supply in a period of historical time and energy consumption of the user are detected through a comprehensive scheduling control device, prediction is made on a period of time in the future by utilizing a multivariate regression statistical analysis method; then scheduling is carried out on the basis that:
under the condition of ensuring that the power supply and the heat energy supply are met, the hot water flow of the heating output is reduced, the compensation is realized by consuming power for heating, the power consumption for heating can compensate the deficiency of hot water heating, and the load in the electric power valley period can be increased;
meanwhile, the gas combined cycle unit reduces the heating output hot water flow, and because the total consumed gas amount is constant, the heating is reduced, and the gas supply amount of the gas combined cycle is increased only by reducing the gas amount distributed to the gas heating boiler, so that the heating hot water output is reduced and the power generation is increased, and the supply is met by matching the change of the power load with the solar power generation;
therefore, the solar power generation and the cogeneration are integrated, the output of the cogeneration and the change of the power consumption load condition of the user are adjusted according to the fluctuation of the solar power generation, and the smooth output of the solar power generation equivalent on the user side is realized by equal detection period and adjustment period based on the real-time detection and prediction continuity regulation and control mode, such as the change before and after the adjustment shown in fig. 5, and the effect is very obvious.
Moreover, the invention also considers the difference of two different heat supply modes: the delay of hot water in pipeline delivery, the instantaneity of electric power compensation heating, and the thermal inertia time of the user (the heating stop time acceptable to the user); therefore, different pipeline distances from a user to a heat source need to be distinguished and treated during power compensation, compensation of heat supply time difference is considered during user heat supply compensation, energy changes of a supply side and a user side are fully considered, smooth output of solar power generation is utilized, and actual requirements of the user and effective utilization of energy are considered.
Drawings
FIG. 1 is a schematic view of the connection between the combined gas cycle and solar power generation combined heating system of the present invention;
FIG. 2 is a schematic structural diagram of an integrated scheduling control apparatus;
fig. 3 is a schematic diagram illustrating connection between an integrated scheduling control apparatus and cloud computing;
FIG. 4 is a schematic structural diagram of a third remote centralized controller;
FIG. 5 is a graph comparing the original solar power output with the adjusted solar power equivalent output curve.
Detailed Description
The invention provides a combined heating system of gas combined cycle and solar power generation and a scheduling method thereof.A power at a supply side is provided by combining a gas combined cycle unit and a solar power generation unit, hot water comes from the gas combined cycle unit, a user supplies heat by adopting two modes of a hot water radiator and heat pump power consumption, on the basis of historical detection, the energy supply and energy consumption conditions in a future period are predicted, the hot water output is reduced and compensated by power consumption heat supply, the gas combined cycle unit reduces the heat supply output and simultaneously reduces the power generation output, so that the user power load has an adjusting space relative to the fluctuation of the solar power generation (the power consumption heat supply can compensate the deficiency of the hot water heating, the load at a power off-peak period can be increased, and the change of the hot water supply also causes the change of the power generation amount at the supply side). And when the two modes of heat supply are compensated, the delay of pipeline transmission, the instantaneity of electric power compensation heat supply and the thermal inertia time of a user are considered, and the effective regulation of the whole system is realized. The present invention will be described in further detail below with reference to specific system configurations and adjustment methods, which are illustrative of the present invention and not limiting.
Referring to fig. 1 to 4, a combined heating system of a gas combined cycle and a solar power generation includes:
the gas heating boiler and gas combined cycle unit A is used for generating electric power and heating hot water;
a solar generator set B for generating electric power;
the heat pump 108 of the user is connected with the gas heating boiler, the gas combined cycle unit A and the solar generator unit B in parallel through the power cable network 113, the heat pump 108 consumes electric power to provide hot water to the hot water type heating radiator 110, water circulation exists between the heat pump 108 and the hot water type heating radiator 110, the heat pump 108 is opened when being heated, and the heat pump 108 is closed when not being used for heating; a heat pump remote switch 117 that controls the heat pump 108;
the ammeter collects the non-heating power consumption of the user;
a hot water type heating radiator 110 of a user connected to the gas heating boiler and the gas combined cycle unit a through a heating pipe network 114; a hot water consumption meter 111 for detecting the amount of hot water input into the hot water type heating radiator 110 by the gas heating boiler and the gas combined cycle unit a; a hot water type heating radiator remote switch 116 controlling the hot water type heating radiator 110;
the first remote centralized controller 1121 acquires the capacity information of the gas heating boiler and the gas combined cycle unit a, including the heating output hot water flow rate and the power generation output electric quantity, and transmits the acquired capacity information to the comprehensive scheduling control device 115; the first remote centralized controller 1121 also receives a scheduling control signal sent by the integrated scheduling control device 115, and controls the gas heating boiler and gas combined cycle unit control execution device 118 to operate according to the scheduling control signal;
the second remote centralized controller 1122 acquires the capacity information of the generated output power of the solar power generator set B, and transmits the acquired capacity information to the comprehensive scheduling control device 115;
a third remote centralized controller 1123, which records information about the distance between the hot water type heating radiator 110 of the user and the pipeline between the gas heating boiler and the gas combined cycle unit a, collects energy consumption information including the amount of non-heating power consumed by the user and the amount of hot water inflow and the amount of non-heating power consumed by the hot water type heating radiator hot water consumption meter 111, and also collects thermal inertia time (i.e., the heating stop time received by the user) input by the user; transmitting the pipeline distance information of the user, the collected energy consumption information and the thermal inertia time to the comprehensive scheduling control device 115;
the third remote centralized controller 1123 further receives a scheduling control signal sent by the integrated scheduling control device 115, and drives the heat pump remote control switch 117 and/or the heating radiator remote control switch 116 to perform an action according to the scheduling control signal;
the integrated scheduling control device 115 generates a regulation control signal according to the received capacity information, the pipeline distance information of the user, and the energy consumption information, and sends the regulation control signal to the first remote centralized controller 1121 and/or the third remote centralized controller 1123.
The specific integrated scheduling control device 115 reduces the heating output hot water flow of the gas heating boiler and the gas combined cycle unit a under the condition of ensuring that the power supply and the heat energy supply are met according to the received capacity information of the gas heating boiler and the gas combined cycle unit a and the received energy consumption information of the user, and the heat supply deficiency required by the user is compensated by the heat pump 108 consuming power for heating due to the reduction of the hot water flow; when the heat pump 108 consumes electric power for heat supply compensation, the time for hot water provided by the gas combined cycle unit to flow to a user and the thermal inertia time are also considered;
the integrated scheduling control device 115 sends out a regulation control signal including the heating output hot water flow and the power generation output electric quantity of the gas heating boiler and the gas combined cycle unit a at the scheduling time, the hot water quantity of the hot water type heating radiator 110 flowing into the user and the heating power consumption of the heat pump 108.
Referring to fig. 2, the integrated scheduling control device 115 includes:
a first data receiving unit 201 for receiving the capacity information of the gas heating boiler and gas combined cycle unit a and the solar generator unit B, the energy consumption information of the user, and the user pipeline distance information;
a data decoder unit 202 that decodes all received data;
a data memory unit 203 that stores all decoded data;
a scheduling control signal calculation unit 204 that generates a scheduling control signal;
a signal encoder 205 that encodes the scheduling control signal; and
the encoded scheduling control signal is transferred to the transmitting units 206 of the first remote centralized controller 1121 and the third remote centralized controller 1123.
Referring to fig. 3, the integrated scheduling control device 115 is connected to the cloud computing service system 917 via the power optical fiber 120, and drives the cloud computing service system 917 to perform computation to obtain a scheduling control signal; the integrated scheduling control device 115 receives the scheduling control signal obtained by the cloud computing service system 917 through the power optical fiber 120, and then transmits the scheduling control signal to the first remote centralized controller 1121 and/or the third remote centralized controller 1123 via a power cable or a wireless transmission manner.
The specific remote control mode is as follows:
the hot water type heating radiator remote control switch 116 is coupled with the comprehensive dispatching control device 115 in a remote control mode through a third remote centralized controller 1123; a heat pump remote control switch 117 remotely coupled to the integrated dispatch control unit 115 via a third remote centralized controller 1123; the heat pump 108 is also provided with a heat pump special electric energy meter 109 which detects the heating power consumption of the heat pump special electric energy meter, and the power consumption is collected by a third remote centralized controller;
the gas heating boiler and gas combined cycle unit control execution device 118 is coupled with the comprehensive scheduling control device 115 in a remote control mode through a first remote centralized controller 1121; and the gas combined cycle generator set control execution device 118 executes actions according to the scheduling control signals.
Referring to fig. 4, the third remote centralized controller 1123 includes a non-heating electric meter pulse counter, a heating hot water flow pulse counter, a pulse signal code converter, a metering signal amplifying transmitter, and a control signal receiving decoder and a remote control signal generator connected to each other;
the non-heating electric meter pulse counter is connected with a user non-heating electric meter and used for detecting user non-heating power consumption data, and the user non-heating power consumption data is transmitted to the comprehensive scheduling control device 115 after being processed by the pulse signal code converter and the metering signal amplifying emitter;
the heating hot water flow pulse counter is connected with a hot water consumption meter 111 of a hot water type heating radiator and is used for detecting the hot water inflow provided by the gas combined cycle unit, the hot water inflow is processed by a pulse signal code converter and a metering signal amplifying transmitter to generate a signal, and the signal and the user pipeline information are transmitted to the comprehensive scheduling control device 115;
and the control signal receiving decoder receives and decodes the scheduling control information sent by the comprehensive scheduling control device 115, and then sends the control signal to the heat pump remote control switch 117 and the hot water type heating radiator running water valve remote control switch 116 through the control signal remote control transmitter to execute actions.
The scheduling method based on the gas combined cycle and solar power generation combined heating system comprises the following steps:
in the time period of 0-T multiplied by delta T, delta T is a sampling period, T is the number of times of collection, the comprehensive scheduling control device predicts the productivity information of T-2T multiplied by delta T in a future period of time by utilizing a multiple regression statistical analysis method according to the received productivity information of the gas heating boiler, the gas combined cycle unit and the solar generating set, then combines the energy consumption information of the user in the time period of 0-T multiplied by delta T and the energy consumption information of the user in the time period of 0-T multiplied by delta T, under the condition of ensuring that the power supply and the heat energy supply are met, the heating output hot water flow of the gas heating boiler and the gas combined cycle unit is reduced, the insufficient heat supply required by a user is compensated by the heat pump consuming power heat supply due to the reduction of the hot water flow, calculating the supplement amount by considering the time and the thermal inertia time of hot water flow provided by the gas heating boiler group to the user;
and then in a time period of T-2T multiplied by delta T, the comprehensive scheduling control device generates and sends a scheduling control signal according to prediction and scheduling calculation of power supply and heat energy supply by taking delta T as a regulation and control period, the first remote centralized controller receives the scheduling control signal and then controls the generated output electric quantity and the heating output hot water flow of the gas heating boiler and the gas combined cycle unit, and the third remote centralized controller receives the scheduling control signal and then controls the heat pump to consume power and supply heat to compensate insufficient heat supply caused by reduction of hot water of the hot water type heating radiator.
Thus, based on real-time detection and prediction continuity regulation and control modes, the system is regulated in equal detection period and regulation period.
The generation of the scheduling control signal of the integrated scheduling control device specifically comprises the following steps:
1) collecting variables:
1.1) collecting the combined cycle power P of the gas heating boiler and the gas combined cycle unit in the time period of 0-T multiplied by delta TCOMB(t) thermal output of the Combined cycle HCOMB(t) and the thermal output H of the gas heating boilerBOIL(t), and sending to the integrated scheduling control device; delta T is a sampling period (specifically, 15-30 min), T is the number of times of collection, and T is a natural number;
collecting the generated output of a No. 0-M solar generator in a time period of 0-T multiplied by delta T
And sending to the comprehensive dispatching control device;
1.2) collecting the following information of 0-N users within a time period of 0-T multiplied by delta T: pipeline distance S between user and heat source gas combined cycle unitiAnd the power consumption is Pi(t) heat consumption H provided by gas combined cycle unit for hot water type heating radiatori(t) installed capacity of Heat Pump
And a user-entered thermal inertia time TiAnd sending the data to the comprehensive dispatching control device;
2) the following variables were calculated:
2.1) calculating the total output of the solar generator in the time period of 0-T multiplied by delta T
Then according to the total output
Predicting total output p of the solar generator in the time period of T-2T multiplied by delta T by utilizing a statistical analysis methodsum(t)；
Collecting the thermal output H of the combined cycle of the gas heating boiler and the gas combined cycle unit in the time period of 0-T multiplied by delta TCOMB(t) thermal output H of gas heating boilerBOIL(t) and Combined cycle Power PCOMB(T) predicting the thermal output H of the combined cycle for a time period of T to 2T x Delta TCOMB(t) thermal output H of gas heating boilerBOIL(t) and Combined cycle Power PCOMB(t)；
2.2) calculating the equivalent distance from each user to the gas combined cycle unitv is the flow rate of the hot water in the pipe; and rounding the calculation result
Will be the same as siIs divided into the same group, which is the l group, siL; such as will siAll users of 10 are divided into one group, and the 10 th group is counted; total L groups, wherein L is a natural number;
grouping each user, respectively calculating the total heating load H of all users in each groupload(l) And heat pump capacity PEHP(l)；
Hload(l)＝∑Hi(t，l)，Hi(t, l) is the heating load of the first group of users i at the moment t;
3) will be P mentioned aboveComB(t)、HCOMB(t)、HBoil(t)、Pload(t)、Hload(l) And PEHP(l) Substituting, forming an optimization problem by the objective function (1) and the constraint conditions (2-10) to carry out iterative solution, taking the minimum value of the objective function as a result, and obtaining each variable (namely the regulating and controlling quantity of the variable in a period of time in the future) as a regulating and controlling signal:
3.1) the objective function is:
wherein p ispv(t) is the adjusted equivalent solar power generation total outputThe force is applied to the inner wall of the container,
the expression of the average equivalent solar power generation output value is as follows:
ppv(t)＝Ppv(t)+(pComB(t)-PComB(t))-pEHPs(t) (2)
wherein p isComB(t) the regulated power output of the combined cycle unit, PCOMB(t) is the predicted combined cycle power output pEHPs(t) all users consume power when t is the power consumption of the heat pump;
3.2) constraint conditions
3.2.1) Heat load balance equation
The power of the insufficient heating at the supply side is delta h (t) by reducing the hot water output, and the expression is as follows:
Δh(t)＝HCOMB(t)-hCOMB(t)+HBoil(t)-hBoil(t)； (4)
wherein HCOMB(t) predicted thermal output of the combined cycle, HBOIL(t) predicted thermal output of the gas heating boiler, hCOMB(t) thermal output of the combined cycle after regulation, hBoil(t) the thermal output of the gas heating boiler;
considering the time of hot water flowing into the user in the pipeline and the thermal inertia time, the compensation Δ h (t) required by the user to use the heat pump is expressed as:
hEHP(t + l, l) is the sum of the heating power of the first group of user heat pumps at the moment of t + l;
3.2.2) constraint of the gas heating boiler and the gas combined cycle unit:
hCOMB(t)＝fCOMB(t)·ηq ComB； (6)
wherein,
the thermal efficiency of the combined cycle is improved;for combined cycle power generation efficiency; h isCOMB(t) thermal output of the post-conditioning combined cycle, pComB(t) the electrical output of the combined cycle after regulation, fCOMB(t) power consumption of the combined cycle after conditioning;
3.2.3) customer side Heat Pump constraints
Thermoelectric ratio constraint: h isEHP(t，l)＝COPEHP·pEHP(t，l) (8)
hEHP(t, l) is the sum of the heating power of the first group user heat pump at the time t, COPEHPIs the heat pump coefficient of performance;
the upper limit of the output: p is more than or equal to 0EHP(t，l)≤min(PEHP(l)，Hload(l)/COPEHP)； (9)
The sum of the heat pump power consumption of all user groups in each time period is as follows:
4) the comprehensive scheduling control device generates scheduling control signals according to the adjusted variables in the operation results and sends out:
the thermal output h of the combined cycle of the gas heating boiler and the gas combined cycle unitCOMB(t) combined cycle electrical output pComb(t) and the thermal output h of the gas heating boilerBoil(t) sending the signal to a first remote centralized controller, and controlling the action of the first remote centralized controller in each time period in the future adjustment time;
the power consumption p of the user heat pumpEHP(t, l) and heat supply hEHP(t, l) is sent to a third remote centralized controller to control the action of the third remote centralized controller in each time period in the future adjustment time.
Referring to a comparison graph of the original solar power generation output and the adjusted solar power generation equivalent output curve shown in fig. 5, it can be seen that the fluctuation of the solar power generation output is large before adjustment, and after adjustment, the solar power generation equivalent output is relatively smooth and has a very significant effect by comparing the front and the back.
Claims (9)
1. The utility model provides a heating system is united with solar energy power generation to gas combined cycle which characterized in that includes:
a gas heating boiler and gas combined cycle unit (A) for generating electric power and heating hot water;
a solar generator set (B) for producing electrical power;
a heat pump (108) of a user is connected with a gas heating boiler, a gas combined cycle unit (A) and a solar generating set (B) in parallel through a power cable network (113), and the heat pump (108) consumes electric power to provide hot water and hot water supply type heating radiators (110); a heat pump remote switch (117) for controlling the heat pump (108);
the ammeter collects the non-heating power consumption of the user;
a hot water type heating radiator (110) of a user connected with the gas heating boiler and the gas combined cycle unit (A) through a heating pipeline network (114); a hot water consumption meter (111) for detecting the amount of hot water supplied from the gas heating boiler and the gas combined cycle unit to the hot water type heating radiator (110); a hot water type heating radiator remote control switch (116) for controlling the hot water type heating radiator (110);
the first remote integrated controller (1121) acquires capacity information including power generation output and heating output of the gas heating boiler and the gas combined cycle unit (A), and transmits the acquired capacity information to the comprehensive dispatching control device (115); the first remote centralized controller (1121) also receives a scheduling control signal sent by the comprehensive scheduling control device (115), and controls the gas combined cycle generator set control execution device (118) to act according to the scheduling control signal;
the second remote centralized controller (1122) is used for acquiring the capacity information of the generated output electric quantity of the solar generator set (B) and transmitting the acquired capacity information to the comprehensive dispatching control device (115);
a third remote centralized controller (1123) which records pipeline distance information between a hot water type heating radiator (110) of a user and a gas heating boiler and a gas combined cycle unit (A), acquires energy consumption information including a non-heating power consumption amount of the user and a hot water inflow amount and a non-heating power consumption amount detected by a hot water consumption meter (111), and also acquires thermal inertia time input by the user; transmitting the pipeline distance information, the collected energy consumption information and the thermal inertia time of the user to a comprehensive scheduling control device (115);
the third remote centralized controller (1123) also receives a scheduling control signal sent by the comprehensive scheduling control device (115), and drives the heat pump remote control switch (117) and/or the heating radiator remote control switch (116) to execute actions according to the scheduling control signal;
and the comprehensive dispatching control device (115) generates a regulation control signal according to the received capacity information, the pipeline distance information of the user and the energy consumption information, and sends the regulation control signal to the first remote centralized controller (1121) and/or the third remote centralized controller (1123).
2. The gas combined cycle and solar power generation combined heating system according to claim 1, wherein the integrated scheduling control device (115) reduces the heating output hot water flow of the gas heating boiler and the gas combined cycle unit (a) under the condition of ensuring that the power supply and the heat energy supply are satisfied according to the received capacity information of the gas heating boiler and the gas combined cycle unit (a) and the solar power generation unit (B) and the energy consumption information of the user, and the insufficient heat supply required by the user due to the reduction of the hot water flow is compensated by the heat pump (108) consuming power for heating;
the comprehensive dispatching control device (115) sends out regulating control signals including the generated output electric quantity and the heating output hot water flow of the gas heating boiler and the gas combined cycle unit (A) at the dispatching time, the hot water quantity of a hot water type heating radiator (110) flowing into a user from the gas heating boiler and the gas combined cycle unit (A) and the heating power consumption of the heat pump (108).
3. The combined gas-fired cycle and solar power generation heating system according to claim 2, wherein the time of hot water flow to the user and the thermal inertia time provided by the gas-fired boiler and gas-fired combined cycle unit (a) are also taken into account when the heat pump (108) consumes electricity for heating compensation.
4. The combined gas-fired combined cycle and solar power generation heating system of claim 1, wherein the integrated dispatch control unit (115) comprises:
the first data receiving unit (201) is used for receiving the capacity information of the gas heating boiler and gas combined cycle unit (A) and the solar generating set (B), the energy consumption information of a user and the distance information of a user pipeline;
a data decoder unit (202) for decoding all the received data;
a data memory unit (203) for storing all decoded data;
a scheduling control signal calculation unit (204) that generates a scheduling control signal;
a signal encoder (205) for encoding the scheduling control signal; and
and a transmitting unit (206) for transmitting the encoded scheduling control signal to the first remote centralized controller (1121) and the third remote centralized controller (1123).
5. The gas combined cycle and solar power generation combined heating system according to claim 1, wherein the integrated scheduling control device (115) is connected with the cloud computing service system (917) through the power optical fiber (120) and drives the cloud computing service system (917) to perform calculation so as to obtain the scheduling control signal; the integrated scheduling control device (115) receives scheduling control signals obtained by the cloud computing service system (917) through the power optical fiber (120), and then transmits the scheduling control signals to the first remote centralized controller (1121) and/or the third remote centralized controller (1123) through a power cable or wireless transmission mode.
6. The combined gas-fired combined cycle and solar power generation heating system of claim 1, wherein the hot water-type heating radiator remote switch (116) is remotely coupled to the integrated dispatch control unit (115) via a third remote centralized controller (1123); a heat pump remote control switch (117) remotely coupled to the integrated dispatch control unit (115) via a third remote centralized controller (1123); the heat pump (108) is also provided with a heat pump special electric energy meter (109) which detects the heating power consumption of the heat pump, and the power consumption is collected by a third remote centralized controller;
the gas heating boiler and gas combined cycle unit control execution device (118) is coupled with the comprehensive dispatching control device (115) in a remote control mode through a first remote centralized controller (1121); and the gas heating boiler and gas combined cycle unit control execution device (118) executes actions according to the scheduling control signal.
7. The combined gas-fired cycle and solar power generation heating system of claim 1, wherein the third remote centralized controller (1123) comprises a non-heating electric meter pulse counter, a heating hot water flow pulse counter, a pulse signal code converter, a metering signal amplifying transmitter, and a control signal receiving decoder and a remote control signal generator connected to each other;
the non-heating electric meter pulse counter is connected with a user non-heating electric meter and used for detecting user non-heating power consumption data, and the user non-heating power consumption data is transmitted to the comprehensive scheduling control device (115) after being processed by the pulse signal code converter and the metering signal amplifying emitter;
the heating hot water flow pulse counter is connected with a hot water consumption meter (111) of a hot water type heating radiator and is used for detecting the hot water inflow provided by the gas combined cycle unit, the hot water inflow is processed by a pulse signal code converter and a metering signal amplifying transmitter to generate a signal, and the signal and user pipeline information are transmitted to the comprehensive scheduling control device (115);
and the control signal receiving decoder is used for receiving and decoding scheduling control information sent by the comprehensive scheduling control device (115), and then sending a control signal to the heat pump remote control switch (117) and the hot water type heating radiator running water valve remote control switch (116) through the control signal remote control transmitter to execute actions.
8. The scheduling method of a combined gas-fired cycle and solar power generation heating system of claim 1 comprising the steps of:
in the time period of 0-T multiplied by delta T, delta T is a sampling period, T is the number of times of collection, the comprehensive scheduling control device predicts the productivity information of T-2T multiplied by delta T in a future period of time according to the received productivity information of the gas heating boiler, the gas combined cycle unit and the solar generator set, and combines the energy consumption information of users in the time period of 0-T multiplied by delta T, under the condition that power supply and heat supply are ensured to be met, the heating output hot water flow of the gas heating boiler and the gas combined cycle unit is reduced, the insufficient heat supply required by the users due to the reduction of the hot water flow is compensated by the heat pump consumed power heat supply, and the time and the thermal inertia time of the hot water provided by the gas heating boiler unit flowing to the users are considered, and the supplement amount is calculated;
and then in a time period of T-2T multiplied by delta T, the comprehensive scheduling control device generates and sends a scheduling control signal according to prediction and scheduling calculation of power supply and heat energy supply by taking delta T as a regulation and control period, the first remote centralized controller receives the scheduling control signal and then controls the generated output electric quantity and the heating output hot water flow of the gas heating boiler and the gas combined cycle unit, and the third remote centralized controller receives the scheduling control signal and then controls the heat pump to consume power and supply heat to compensate insufficient heat supply caused by reduction of hot water of the hot water type heating radiator.
9. The scheduling method of a combined gas-fired cycle and solar power generation heating system of claim 8 wherein the generation of the scheduling control signal of the integrated scheduling control device comprises the steps of:
1) collecting variables:
1.1) collecting the combined cycle power P of the gas heating boiler and the gas combined cycle unit in the time period of 0-T multiplied by delta TCOMB(t) thermal output of the Combined cycle HCOMB(t) and the thermal output H of the gas heating boilerBOIL(t), and sending to the integrated scheduling control device; delta T is a sampling period, T is the acquisition frequency, and T is a natural number;
collecting the generated output of a No. 0-M solar generator in a time period of 0-T multiplied by delta T
And sending to the comprehensive dispatching control device;
1.2) collecting the following information of 0-N users within a time period of 0-T multiplied by delta T: pipeline distance S between user and heat source gas heating boiler and gas combined cycle unitiAnd the power consumption is Pi(t) heat consumption H provided by gas heating boiler and gas combined cycle unit for hot water type heating radiatori(t) installed capacity of Heat Pump
And a user-entered thermal inertia time TiAnd sending the data to the comprehensive dispatching control device;
2) the following variables were calculated:
2.1) calculating the total output of the solar generator in the time period of 0-T multiplied by delta T
Then according to the total output
Predicting total output P of the solar generator in the time period of T-2T multiplied by delta T by utilizing a statistical analysis methodsum(t)；
Collecting the thermal output H of the combined cycle of the gas heating boiler and the gas combined cycle unit in the time period of 0-T multiplied by delta TCOMB(t) thermal output H of gas heating boilerBOIL(t) and Combined cycle Power PCOMB(T) predicting the thermal output H of the combined cycle for a time period of T to 2T x Delta TCOMB(t) thermal output H of gas heating boilerBOIL(t) and Combined cycle Power PCOMB(t)；
2.2) calculating the equivalent distance from each user to the gas-fired heating boiler
v is the flow rate of the hot water in the pipe; and rounding the calculation result
Will be the same as siIs divided into the same group, which is the l group, siL; total L groups, wherein L is a natural number;
grouping each user, respectively calculating the total heating load H of all users in each groupload(l) And heat pump capacity PEHP(l)；
Hload(l)＝∑Hi(t，l)，Hi(t, l) isHeating load of the group I of users at the moment t;
3) will be P mentioned aboveComB(t)、HCOMB(t)、HBoil(t)、Pload(t)、Hload(l) And PEHP(l) Substituting, forming an optimization problem by an objective function (1) and constraint conditions (2-10) to carry out iterative solution, taking the minimum value of the objective function as a result, and obtaining each variable as a regulation signal:
3.1) the objective function is:
wherein p ispv(t) is the adjusted equivalent solar power generation total output,
the expression of the average equivalent solar power generation output value is as follows:
ppv(t)＝Ppv(t)+(pComB(t)-PComB(t))-pEHPs(t) (2)
wherein p isComB(t) the regulated power output of the combined cycle unit, PCOMB(t) is the predicted combined cycle power output pEHPs(t) all users consume power when t is the power consumption of the heat pump;
3.2) constraint conditions
3.2.1) Heat load balance equation
The power of the insufficient heating at the supply side is delta h (t) by reducing the hot water output, and the expression is as follows:
Δh(t)＝HCOMB(t)-hCOMB(t)+HBoil(t)-hBoil(t)； (4)
wherein HCOMB(t) predicted thermal output of the combined cycle, HBOIL(t) predicted thermal output of the gas heating boiler, hCOMB(t) thermal output of the combined cycle after regulation, hBoil(t) the thermal output of the gas heating boiler;
considering the time of hot water flowing into the user in the pipeline and the thermal inertia time, the compensation Δ h (t) required by the user to use the heat pump is expressed as:
hEHP(t + l, l) is the sum of the heating power of the first group of user heat pumps at the moment of t + l;
3.2.2) constraint of the gas heating boiler and the gas combined cycle unit:
hCOMB(t)＝fCOMB(t)·ηq ComB； (6)
wherein,
the thermal efficiency of the combined cycle is improved;
for combined cycle power generation efficiency; h isCOMB(t) thermal output of the post-conditioning combined cycle, PComB(t) the electrical output of the combined cycle after regulation, fCOMB(t) power consumption of the combined cycle after conditioning;
3.2.3) customer side Heat Pump constraints
Thermoelectric ratio constraint: h isEHP(t，l)＝COPEHP·pEHP(t，l) (8)
hEHP(t, l) is the sum of the heating power of the first group user heat pump at the time t, COPEHPIs the heat pump coefficient of performance;
the upper limit of the output: p is more than or equal to 0EHP(t，l)≤min(PEHP(l)，Hload(l)/COPEHP)； (9)
The sum of the heat pump power consumption of all user groups in each time period is as follows:
4) the comprehensive scheduling control device generates scheduling control signals according to the adjusted variables in the operation results and sends out:
combined cycle heat removal for gas fired heating boiler and gas fired combined cycle unitForce hCOMB(t) combined cycle electrical output PComB(t) and the thermal output h of the gas heating boilerBoil(t) sending to the first remote centralized controller, and controlling the actions of the first remote centralized controller in each time period in the future adjustment time;
the power consumption p of the user heat pumpEHP(t, l) and heat supply hEHP(t, l) is sent to a third remote centralized controller to control the action of the third remote centralized controller in each time period in the future adjustment time.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110323870.9A CN102520675B (en) | 2011-10-23 | 2011-10-23 | Gas-steam combined cycle and solar power generation combined heating system and scheduling method thereof |
| US13/809,889 US9261294B2 (en) | 2011-10-23 | 2011-12-31 | Joint heating system of gas combined cycle and solar power and dispatching method thereof |
| PCT/CN2011/085103 WO2013060082A1 (en) | 2011-10-23 | 2011-12-31 | Fuel gas combined cycle and solar power generation combined heating system and scheduling method thereof |
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| CN201110323870.9A CN102520675B (en) | 2011-10-23 | 2011-10-23 | Gas-steam combined cycle and solar power generation combined heating system and scheduling method thereof |
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| WO2013060082A1 (en) | 2013-05-02 |
| CN102520675B (en) | 2014-03-12 |
| US9261294B2 (en) | 2016-02-16 |
| US20130270353A1 (en) | 2013-10-17 |
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